Galvanizing-pot.



L. L. KNOX.

v GALVANIZING POT APPLICATION FILED FEB. 4. |918,

Patented 0015.29, 1918-,

2 SHEETS-SHEET 1- llllllllIlIIIlIIIlllllllllllllllllllllllll INVENTOR L. L. KNOX.

GALVANIZING POT.

APPLICATION man EEB. 4. ma,

Patented Oct. 29, 1918'.

2 SHEETS-SHEET 2.

TW/T... mi mgm *a @x (m A rin,

LUTHER- 1.. KNox, or PELLEvUE, PENNSYLVANIA, AssrGNon To BLAW-KNox COM- PANY, or PITTSBURGH, PENNSYLVANIA, A CORPORATION 0E NEW JEEsEY.

" vaALvANIzIITe-PoT.

To all whom it may concern:

.Beit known that I, LUTHER L.. KNOX, residing at Bellevue, 'gheny andState of vented a new and useful Improvement in Galvanizing-Pots, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which-'- Figure 1 is a plan view partly broken away of a galvanizing pot embodying my invention;

Fig. 2 is a section on the line II-II of Fig. l;

Fig. 2a is a detail sectional view;

Fig. 3 is a perspective view showing the manner in which the parts of the pot are assembled; and

Fig. 4 is a vertical section showing a modiiication and also showing the bottom member of the pot before welding. My invention has relation to galvanizing pots, and is designed to provide a galvanizing pot constructed from sheet metal, which will be practically seamless, which can be readily.constructed and in which the portions of the pot which are subjected to the greatest deterioration in use areprotected in such a manner as to greatly extend the life of the pot.

Referring to the accompanyin drawings, inwhich I have illustrated a preIerred form of my invention, the numeral 2-designates the body portion of the pot which is preferably formed from `a single piece of sheet metal -bent into generally rectangular form but with rounded corners, the edge portions of the sheet being brought together and overlapped, as indicated at 3 in Fig. 2a. These overlapped portions are then welded in any suitable manner, as by the water-gas method, so as to make a practically homogeneous connection of approximately the same thickness as the general thickness of the sheet metal. The bottom portion 4 of the pot consists of a separate sheet metal member having a" surrounding upturned marginal flange 5, which is telescoped within the lower portion of the body 2, as shown in Fig. 4, and the overlapping portions of the fiange and body are then welded together in the same manner as that described for the welding of the edge portions of the body.

Specication of Letters Patent.

lband also of sheet metal in the county of Alle- .l Pennsylvania, have in Patented oct.. 2a, rais.

Application led `February 4, 1918. Serial N o. 215,281.

The numeral 6 designates a. reinforcing and preferably of somewhat greater thickness than that of the sheet metal, body. y v may be placed externally of the body and entirely surrounding the same, as shown in Fig. 2, or it may be placed internally of the body as shown at 6a in Fig. 4. In either case, it is of a vertical width or height suH- cient to cover the working levels of the metal in the pot. That is to say, its upper edge should be slightly above the normal maximum level of the bath in the pot, while its lower edge should extend below the level at which the pot is normally emptied in use. While this band may be riveted to the body, I prefer to weld lit in place, its ends being overlapped and welded in a manner similar to the welds before described. In this way, it may be made to become a practically homogeneous part of the pot.

The numeral 7 designates aV surrounding external angeat the upper edge of the pot. In this case, I have shown this flange as formed of a separate piece of metal iitted and riveted to the body portion.

Galvanizing pots tend to cut away and fail rapidly at that portion of the side walls which is at about the upper level of the molten bath in the pot and where oxidation of such bath occurs. By the provision of the reinforcing band, this portion of the pot is effectively reinforced and its life greatly extended.

My invention provides a sheet metal pot which can bereadily constructed and which will be durable in service.

I do not wish to limit myself, particularly in so far as my broader claims are concerned, to any particular construction of the body portion of the pot, since this may be built up from sheet metal in other ways than that described.

I claim:

1. A galvanizing pot, having a sheet meta] body portion of single thickness at its bottom and at the upper and lower portions of its vertical walls, the intermediate portion of the vertical walls being of double thickness; substantially as described.

2. A galvanizing pot, having a sheet metal body portion of single thickness at its bottom and at the upper and lower portions of its vertical walls, the intermediate portion of the vertical walls being thickened by a This reinforcingband reinforcing band secured thereto; substantially es described 3.. A galvanizing pota having e sheet metal body portion of slngle thickness et its bottom and at the upper and lower portions of its verticai Wells,` the intermediate portion of the vertical Walle being thickened by n reinforcing bend permanently Welded thereto, and terminating et its edges some distance from the top and bottom of the pot; substantially as described 4. A galvanizing pot having e body portion, consisting of a single sheet of metal Whose edges are overle `ped and Weldeds and e continuous mete bend extendin around the intermediate portion only o Leeeee said body and reinforcing the "weld in tinbody as Well as the body es e whole; ein

stentielly es described.

5. A galvanizing pot having e body poi'- Ileimi tion, lconsisting of :i single sheet of Whose edges are overlapped and Welded.

and e continuons metal band extending;`

around the intermediate yportion only olf' said body and reinforcing the Weld in tbf body weli as the body :is e Whole, the po In testimony whereof, I have hereunto sei my hand.

' LUTHER L. KNOX. 

